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Track tyres and the size game

Well my 888R's are closing in on retirement and I want to try and neaten up the nugget for consistency.

I currently have 225/45/17 front and 235/45/17 rear Toyo 888R's.

I have been told Nitto NT01's are pretty similar (made by Toyo) and have a 100TW. I want to give em a go (unless something else pops up) but they come in either 225/45 (and I dont want to take tyre away) or 235/40 and 245/40 widths.

I run a 17x8 Lenso D1 rim.

From my calcs the 235/40 should be fine and the reduction (albeit sweet FA) in rolling diameter will only assist acceleration.

Has anyone played with this at all and any experiences I can learn from?

I've had 235/40 and 255/40 NT01 tyres on 9" rims and to be honest there wasn't that much of a visible difference in the sidewall angle when fitted and on the car. not as much as I expected anyway. I think a 235/40 on a 8" rim would be ok, but it will be a bit sloppy compared to it on a 9" rim. that said, I remember one of the guys in QLD with the yellow silvia (SC_180 or something arather) had 255/40 all round on 9" rims with no issues, so going by that your 235 on a 8" rim will probably be fine
Edited by boost_bus180, 27 February 2017 - 03:54 PM.

Your wheel offset, and to a lesser extent your ride height, will be the determining factors of where and when your tyre scrubs. 235/40 is a very conservative size tyre to use on a silvia and can fit just fine. You're stressing over nothing here

Tyres are between 160-175 a corner which is bloody cheap IMO and I guess that will come with the trade off of overall grip. As stated I was running the older 888R. The new R888R are near twice the price of these bangers.

Anyone had any experience with the above mentioned I would love to know. Appreciate feedback on NT01 vs 888R above, thanks mate.